Frequency counter using F{GA, STM32 and a Bluetooth Android APP

NANOCOUNTER Frequency counter using F{GA, STM32 and a Bluetooth Android APP

This is from a blog posy Andy's Workshop

I like the idea pof instruments that use a tablet with Bluetooth interface for data display and instrument setup.


http://andybrown.me.uk/2016/02/21/nanocounter

A RUGGEDIZED GENERAL PURPOSE 100 kHz - 2 GHz LOW NOISE RF PREAMPLIFIER by Glen E. Gardner Jr., AA8C

As submitted to QEX/Quarterly Communications for Publication
Published in May-June 2004 QEX

A RUGGEDIZED GENERAL PURPOSE 100KHz-2GHz LOW NOISE RF PREAMPLIFIER
by Glen E. Gardner Jr., AA8C

http://gridtoys.com/preamp/preamp.html

A JFET preamplifer for 50 MHz by AA8C

A JFET preamplifier for 50 MHz
Glen Gardner, AA8C
http://gridtoys.com/6m_preamp/jfet_preamp.html

Possible Replacement for MPF-102/MPF-105 JFET

Possible Replacement for MPF-102/MPF-105 JFET

http://gridtoys.com/6m_preamp/MMBF5457.pdf

https://www.onsemi.com/pub/Collateral/2N5457-D.PDF

Aluminum 40/30/20 meter Square Loop Antenna by AA8C

A MORE EFFICIENT MAGNETIC LOOP ANTENNA

Variations on a Theme Continued

Glen E. Gardner, Jr.

AA8C

http://gridtoys.com/glen/loop/loop3.html

Early 20th Century Magazines and Engineering Proceedings

A very large collection of early 20th century radio magazines and proceedings in pdf format.

http://www.jumpjet.info/#menu

40/80M Direct Conversion REceiver by F6KFT

The "TENOR" receiver 40 / 80m Direct conversion receiver by F6KFT

http://f6kft.free.fr/spip.php?article31